Abstract
Full-scale fuel tank inerting testing is being conducted on a ground based Boeing 747SP by the Federal Aviation Administration. Several methods of modeling inert gas distribution, in terms of oxygen concentration evolution, are being studied in an attempt to develop inexpensive tools for designing efficient inert gas deposit systems for commercial transport airplane fuel tanks. Results showed that an inexpensive scale test article and a simple engineering computational model were effective at predicting the inert gas distribution of the 747SP compartmentalized center wing fuel tank with highly localized inert gas deposit. The limited Computational Fluid Dynamics data available illustrates this method of predicting inert gas evolution through the tank has some limitations. The engineering model was less accurate when predicting trends of the inerting process for multiple-bay deposit points when compared with the scale tank test results.
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